Cytisus

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Cytisus
Cytisus ardoini2.jpg
Cytisus ardoini
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Faboideae
Tribe: Genisteae[1]
Genus: Cytisus
Desf.
Species

43–235; see text.

Synonyms
  • Chamaecytisus Link
  • Chronanthus K. Koch
  • Sarothamnus Wimm.
  • Spartocytisus Webb & Berthel.

Cytisus is a genus of about 50 species of flowering plants in the family Fabaceae, native to open sites (typically scrub and heathland) in Europe, western Asia and North Africa. It belongs to the subfamily Faboideae, and is one of several genera in the tribe Genisteae which are commonly called brooms. They are shrubs producing masses of brightly coloured, pea-like flowers, often highly fragrant.[2] Members of the segregate genera, Calicotome and Lembotropis are sometimes included in Cytisus.

Species[edit]

Cytisus comprises the following species:[3][4][5]

Species names with uncertain taxonomic status[edit]

The status of the following species is unresolved:[5]

Hybrids and Cultivars[edit]

The following hybrids have been described:[5]

  • +Laburnocytisus 'Adamii' (Poit.) C. K. Schneid. (Laburnum anagyroides × Chamaecytisus purpureus)
  • Cytisus ×beanii G.Nicholson (Cytisus ardoini × Cytisus purgans)
  • Cytisus ×czerniaevii Krecz.
  • Cytisus ×dallimorei Rolfe (Cytisus multiflorus × Cytisus scoparius)
  • Cytisus ×praecox Beauverd (Cytisus multiflorus × Cytisus purgans)
  • Cytisus ×syreiszczikowi V.I. Krecz.
  • Cytisus ×vadasii J.Wagner
  • Cytisus ×versicolor Dippel (Cytisus hirsutus × Cytisus purpureus)
  • Cytisus ×virescens Beck
  • Cytisus ×watereri Wettst.

Species have been widely cultivated and hybridised, and the following cultivars have gained the Royal Horticultural Society's Award of Garden Merit:

  • 'Boskoop Ruby'[9] (crimson flowers)
  • 'Burkwoodii'[10] (red and yellow flowers)
  • 'Hollandia'[11] (red and cream flowers)
  • C. ×kewensis[12] (Cytisus ardoinii × Cytisus multiflorus; small, prostrate shrub with cream flowers)
  • C. ×praecox 'Allgold'[13] (yellow flowers)
  • C. ×praecox 'Warminster' [14] (pale yellow flowers)
  • 'Zeelandia'[15] (pink and cream flowers)
  • Lena Broom is noteworthy also as a popular garden shrub of mainly hybrid origins.

References[edit]

  1. ^ Cardoso D, Pennington RT, de Queiroz LP, Boatwright JS, Van Wyk B-E, Wojciechowski MF, Lavin M. (2013). "Reconstructing the deep-branching relationships of the papilionoid legumes". S Afr J Bot 89: 58–75. doi:10.1016/j.sajb.2013.05.001. 
  2. ^ RHS A–Z encyclopedia of garden plants. United Kingdom: Dorling Kindersley. 2008. p. 1136. ISBN 1405332964. 
  3. ^ "ILDIS LegumeWeb entry for Cytisus". International Legume Database & Information Service. Cardiff School of Computer Science & Informatics. Last edited on 1 November 2005 (rebuilt on 24 April 2013). Retrieved 17 April 2014.  Check date values in: |date= (help)
  4. ^ USDA, ARS, National Genetic Resources Program. "GRIN species records of Cytisus". Germplasm Resources Information Network—(GRIN) [Online Database]. National Germplasm Resources Laboratory, Beltsville, Maryland. Retrieved 17 April 2014. 
  5. ^ a b c "The Plant List entry for Cytisus". The Plant List. Royal Botanic Gardens, Kew and the Missouri Botanical Garden. 2013. Retrieved 17 April 2014. 
  6. ^ Some sources treat Cytisus ingramii as a synonym of Cytisus commutatus.
  7. ^ Some sources treat Cytisus racemosus as a synonym of Genista stenopetala.
  8. ^ Some sources treat Cytisus stenopetalus as member of the genus Genista: Genista stenopetala.
  9. ^ "RHS Plant Selector—Cytisus 'Boskoop Ruby'". Retrieved 17 July 2013. 
  10. ^ "RHS Plant Selector—Cytisus 'Burkwoodii'". Retrieved 17 July 2013. 
  11. ^ "RHS Plant Selector—Cytisus 'Hollandia'". Retrieved 17 July 2013. 
  12. ^ "RHS Plant Selector—Cytisus ×kewensis". Retrieved 17 July 2013. 
  13. ^ "RHS Plant Selector—Cytisus ×praecox 'Allgold". Retrieved 17 July 2013. 
  14. ^ "RHS Plant Selector—Cytisus ×praecox 'Warminster". Retrieved 17 July 2013. 
  15. ^ "RHS Plant Selector - Cytisus 'Zeelandia'". Retrieved 17 July 2013.